The sources and accumulation pathways of soil organic carbon(SOC)constitute fundamen-tal aspects of carbon sequestration and stabilization research amidst global change.Plant and microbial bio-molecules play a pivotal role in SOC accumulation.To gain a deeper understanding of how plant and micro-bial biomolecules drive SOC accumulation,this paper collates published research to offer an extensive analysis of progress made in the field of plant-derived and microbial-derived carbon accumulation in soils.The findings reveal:1)Microbial residues have emerged as a leading area of research in recent years,with studies on microbial necromass carbon in grassland and agricultural ecosystems outnumbering those in for-est ecosystems;2)While methods used to investigate SOC accumulation have become more diverse and sophisticated,there are still limitations in quantifying plant-and microbial-derived carbon;3)The impact of warming or nitrogen addition on the accumulation of plant-and microbial-derived carbon has been exten-sively explored,yet results are inconsistent,and the underlying mechanisms remain elusive.Future research should leverage advanced techniques to enhance the precision of quantifying various SOC sources and delve into the inherent mechanisms of SOC accumulation across diverse scenarios within the context of global change.Additionally,there is a need to broaden the scope of studies to include other global change factors such as precipitation changes,elevated carbon dioxide concentrations,land use alterations,and their interactive effects on SOC accumulation from diverse sources.
维普
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